1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.os;
18
19import com.android.layoutlib.bridge.impl.DelegateManager;
20import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
21
22/**
23 * Delegate implementing the native methods of android.os.SystemClock
24 *
25 * Through the layoutlib_create tool, the original native methods of SystemClock have been replaced
26 * by calls to methods of the same name in this delegate class.
27 *
28 * Because it's a stateless class to start with, there's no need to keep a {@link DelegateManager}
29 * around to map int to instance of the delegate.
30 *
31 */
32public class SystemClock_Delegate {
33    private static long sBootTime = System.currentTimeMillis();
34
35    @LayoutlibDelegate
36    /*package*/ static boolean setCurrentTimeMillis(long millis) {
37        return true;
38    }
39
40    /**
41     * Returns milliseconds since boot, not counting time spent in deep sleep.
42     * <b>Note:</b> This value may get reset occasionally (before it would
43     * otherwise wrap around).
44     *
45     * @return milliseconds of non-sleep uptime since boot.
46     */
47    @LayoutlibDelegate
48    /*package*/ static long uptimeMillis() {
49        return System.currentTimeMillis() - sBootTime;
50    }
51
52    /**
53     * Returns milliseconds since boot, including time spent in sleep.
54     *
55     * @return elapsed milliseconds since boot.
56     */
57    @LayoutlibDelegate
58    /*package*/ static long elapsedRealtime() {
59        return System.currentTimeMillis() - sBootTime;
60    }
61
62    /**
63     * Returns milliseconds running in the current thread.
64     *
65     * @return elapsed milliseconds in the thread
66     */
67    @LayoutlibDelegate
68    /*package*/ static long currentThreadTimeMillis() {
69        return System.currentTimeMillis();
70    }
71}
72